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Myxilla (Burtonanchora) lissostyla Burton 1938

Description

provided by NMNH Antarctic Invertebrates

“MYXILLA LISSOSTYLA sp.n.

(Text-fig. 1.)

Occurrence. — Hunter’s Station 9 (65° 18’ S., 95° 20’ E.), 240 fathoms, bottom temperature + 1•38° C., bottom ooze with erratics, January 28, 1914.

Diagnosis. — Sponge massive; surface uneven, shaggy; oscules not apparent; colour, in spirit, pale yellow to dark brown; skeleton composed of a dendritic system of ascending fibres of styli, 0•08 by 0•035 mm.; tornota, strongylote, ends equal and ornamented with crowns of spines, 0•035 by 0•01 mm. ; chelae, 0•11 mm. chord.

Remarks.—The several specimens are in various stages of maceration but as they so clearly represent a new and well-characterised species it has been thought worth while to give them a name. Their nearest relatives are M. pistillaris Topsent and M. novae-zealandiae Dendy, with which they agree in the shape of the tornota and in the possession of smooth styli, but differ from both in the large size of their spicules, particularly of the chelae, and in the shape of the chelae.”

(Burton, 1938)